Seroprevalence survey for Salmonella Abortusovis infection in Swiss sheep flocks

Wirz-Dittus, S; Belloy, L; Hussy, D; Waldvogel, A S; Doherr, M G (2010). Seroprevalence survey for Salmonella Abortusovis infection in Swiss sheep flocks. Preventive veterinary medicine, 97(2), pp. 126-30. Amsterdam: Elsevier 10.1016/j.prevetmed.2010.08.007

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Between 1976 and 2003, no infections with Salmonella Abortusovis had been officially recorded in Switzerland. Since then, however, several sheep flocks were infected and suffered massive fetal losses suggesting a re-emergence of the disease. Therefore, the aim of this study was to assess the epidemiological situation of S. Abortusovis infection in sheep in this country. A representative serum sample collected in 2007 in the context of certifying Brucella freedom included sera from 578 flocks with a total of 8426 sheep from all regions in Switzerland and the Principality of Liechtenstein. Sera were tested by ELISA for the presence of antibodies specific for S. Abortusovis. The cantonal seroprevalence was estimated at the sheep as well as the flock-level by taking into account (a) all flocks with one or more seropositive sheep (Flock 1+) and (b) only the flocks with two or more seropositive sheep (Flock 2+). Flocks with seropositive sheep were found throughout the country with an overall sheep-level prevalence of 1.7%. At the flock-level, overall prevalences of 16.3% and 5.0% were found for Flock 1+ and Flock 2+ definitions, respectively. Significant sheep-level clusters were located in the cantons of Bern, the Valais and Graubunden, while significant flock-level clusters (Flock 1+ and Flock 2+) were located in the canton of Graubunden only. Our results indicate that exposure of Swiss sheep flocks to S. Abortusovis is wide-spread.

Item Type:

Journal Article (Original Article)


05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Institute of Veterinary Bacteriology
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Veterinary Public Health Institute

UniBE Contributor:

Hüssy, Daniela and Doherr, Marcus








Factscience Import

Date Deposited:

04 Oct 2013 14:32

Last Modified:

17 Mar 2015 21:19

Publisher DOI:


Web of Science ID:


URI: (FactScience: 218690)

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